James henby sheehaist



` JA. H. SHEBHAN.

NUT LOCK.

Patented Oct. 28, 1884.

Unirse Srarns 'arppjr @arreso J AMES HENRY SHEEHAN, OF BANGOR, BIZ-LINE.

NUT-LOCK.

SPEGIFICATIQN forming part of Letters Patent No. 307,147, dated October 28, 1884. C

Application filed Ma\- 23, 1F34. (No model.)

To @ZZ whom, t 71mg/ concern.-

Be it known that I, J AMES HENRY SHEEHAN, acitizen of the United States, residing at Bangor, in the countyof Penobscot and State of Maine, have invented a new and useful Nut- Lock; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

My invention consists of an improvement upon a nutAloclr invented and patented by me under Letters Patent No; 282,383, dated July 31, 1883. In practice I have found some additional constructions and formations desirable to perfect the operation and effectiveness of my nut-lock.

In the accompanying drawings similar letters refer to corresponding parts throughout the several gurcs. Figure l shows an elevation or side view of an ordinary rail with my invention in actual use. Fig. 2 shows a crosssection of a rail and fish-plates with my invention in actual use. Fig. 3 is a front View ofmy invention with thelocking-plate a swung out and away from the nut and washerplate b.

A is an ordinary rail for railroad use and purposes. B B are slrplates. C is a screwbolt. D is a nut. Eis a nut-lock. a is the locking or front plate of the lock. b is the back plate or washer-plate of the lock. yd is the aperture in the washer-plate 'to allow it to pass on over the bolt C. c is the anged aperture of the lock. ff are iianges formed on the locking-plate around the aperture e. g is a flange formed on the outside or locking plate a. is a clamp or lip. k is the fold or sharp turn in the formation of the iiange g. m m are slits cut to allow the rim of the nut aperture 4to flange without strain on the metal. o is the end of the locking-plate a.

In cases where my lock is applied to wood I form screw-holes under the nut D, so that the nut D will cover them when in place, and thus prevent any possibility of the screws in the holes ever becoming loose or getting ont.

In my former Patent No. 282,383, dated July 31, 1883, I have secured certain parts and operations of a nut-lock, and it is my present intention to secure additional improvements and functions.

Ver-plate b is intended to fit on over the bolt when screwed into place.

In construction I provide a suitable strip of any thin pliable metal-such as galvanized iron-and perforate it to form the circular aperture d to pass over the bolt C. I then form the aperture e with the flanges or iianged rim f, and bend the strip nearly in the middle of its length, as at n, to form the washer-plate b and the front orlocking plate, c. The washand behind the nut D, against the fish-plate B, and to be held in position by the nut D 'Ihe front or locking plate, a, is intended to be bent or folded baekonto the washer-plate b, the aperture e fitting over the nut D and the flanges or flanged edges f, clasping the nut and holding it securely in its proper position and entirely preventing it from turning or rotating.

In order to secure the outer or locking plate, a, and prevent it from slipping off from the nut, I form the lip i in extension of the washer-plate b, of a suitable length to bend over onto and outside of the end o of the lockingplate a, thus holding the plate c securely in place and preventing any possibility of its slipping off the nut.

In this nutlock as described the washerplate and the `locking-plate are integral, and the plates forming the nut-lock operate to prevent any turning or rotation of the nut by the contact ofthe edges of the plates against the flanges of the rail or the fish-plate, and it is not necessary that there should be two flanges to secure the effective working of the lock, but one flange or any projecting ledge of wood or metal is sufficient; and the washer-plate may be secured by nails or screws through holes to any wood or penetrable substance, and thus act as effectively as if acting against the ange of a rail. vIn this description of lock the plates are integral.

In the nutlock which I have described the Y resistance to turning or rotation of the nut is effected by the contact of the edges with the flange or lianges of a rail or fish-plate; but when desirable my lock can be applied to voed-work, and the plates can be xed stationary by screws or nails used through holes provided for that special purpose. In forming the flanged rims f f to the aperture e, in tended to clasp the nut, it, is necessary to IOO 2. In a. nutloek, the combination of the Washer-plate b, formed with the clamping-lip Vhab I claim, and desire l0 secure by Let- 13, to bend or clamp onto the plate a, and the 15 ters Patent, isnul7l0cking plate a, formed with Lheange g,

5 l.l In a nut-lock fonr'ned with the Washerwhen used to form a nut-lock, as shown Iund plate b and locking plate al formed integral, described. the folding` lip or` clamp i, folding o1 bendino down onto or outside of lche locking-plated JAMES HENRY SHEEHAN' when pressed over the nnb D v21nd aga-inst the Witnesses:

Io Wasllervplate b, to hold or clamp the plate a I WV. H. HAELON,

make cuts or incisions m, to allow the metal to spread and form the ange.

in position and prevent ib from springing off JOHN B. B. FISKE. and releasing t-he nut. 

